ERWhe kiʻekiʻe-frequency kū'ē wili pololei humuhumu paipu;LSAWua hoʻoheheʻe ʻia i loko o ke arc ke kuʻi pololei ʻana i ka paipu wili ʻia;No nā paipu wili wili pololei nā mea ʻelua, akā ʻokoʻa ke kaʻina hana kuʻi.No laila ʻaʻole hiki iā ʻoe ke ʻōlelo i kekahi o ia mau mea no ka paipu wili wili pololei.ʻOi aku ka maʻamau o ka paipu kila SSAW– paipu wiliwili spiral.Hoʻokaʻawale ʻia ke alapine kiʻekiʻe kiʻekiʻe e like me ke kaʻina hana kuʻi ʻana i nā ʻano like ʻole induction welding a me ke kūpaʻa ʻana i nā ʻano ʻelua, e pili ana i ka leo ākea ākea e like me ka mea maka, ma o ka hoʻomau mau ʻana, ka kuʻi ʻana, ka welding, ka mālama ʻana i ka wela, ka nui, pololei, kaʻina ʻoki.Hoʻohālikelike ʻia me ka SSAW, ka pololei kiʻekiʻe, ka mānoanoa o ka paia, ka maikaʻi o ka ʻili, ʻo ke kaomi kiʻekiʻe ka mea pono.Akā ʻo ka hemahema, ʻo ia wale nō ka huahana liʻiliʻi liʻiliʻi ka paipu paia lahilahi, weld maʻalahi kūʻokoʻa kūʻokoʻa, hoʻohui ʻole ʻia, nā ʻauwaha corrosion defects.Hoʻohana nui ʻia e like me ke kinoea kūlanakauhale, ka lawe ʻana i ka aila.

ʻO ka mea o ka paipu kila LSAW he pā kila mānoanoa hoʻokahi, ʻo ke kila i loko o ka mold a i ʻole ka mīkini hoʻoheheʻe ʻana i ka medium-voltage (volume), me ka hoʻohana ʻana i ʻelua ʻaoʻao submerged arc welding ʻO kāna huahana kikoʻī kikoʻī he ākea, ka paʻakikī o ka weld, plasticity, maikaʻi uniformity a me ka compactness, me ka nui paipu anawaena, paia mānoanoa, ikaika kū'ē i kiʻekiʻe puʻe, haʻahaʻa wela corrosion kū'ē, etc. I ke kukulu ana i ka ikaika kiʻekiʻe, kiʻekiʻe toughness, kiʻekiʻe kiʻekiʻe o ka lōʻihi mamao aila a me ke kinoea pipeline, ke kila paipu. ʻo ka nui o ka nui anawaena mānoanoa pā pololei seam submerged arc.E like me nā ʻōlelo o ka API maʻamau i ka nui o ka aila a me ke kinoea pipelines, i ka wā e piʻi ai ke kiʻekiʻe, ke kai a me ke kūlanakauhale ka nui o nā wahi ma ka papa 1, 2, ʻo ke arc i hoʻopaʻa ʻia i loko o ke kaila pololei ka mea i koho ʻia no ke ʻano paipu.

E like me ka hana ʻana o nā ʻano like ʻole hiki ke hoʻokaʻawale ʻia i: UOE/JCOE/HME.ʻO nā Volumes o spiral submerged arc (SSAW) aia ma ke kuhikuhi me ka laina waena o ka paipu e hoʻokumu ana i ka Angle (hiki ke hoʻololi ʻia), ka hana ʻana a me ke kuʻi ʻana, ka wili kuʻi ʻana i loko o ka spiral, ʻoi aku ka maikaʻi o ka hiki ke hana i nā kikoʻī like ʻole o ke anawaena paipu kila o ka ʻO ka kikoʻī like, ʻoi aku ka nui o nā mea maka, hiki i ka weld ke pale i ke koʻikoʻi nui, maikaʻi ke kūlana koʻikoʻi, ʻo ka hemahema o ka nui geometry maikaʻi ʻole, ka lōʻihi weld i hoʻohālikelike ʻia me ka lōʻihi o ke kuʻi pololei, maʻalahi ka hana ʻana i nā māwae, porosity, slag, weld defects e like me ka welding, welding stress is tensile stress state.ʻO nā lula a me nā hoʻoponopono o ka ʻaila maʻamau a me ke kinoea lōʻihi lōʻihi pipeline design screw Spiral submerged arc hiki ke hoʻohana wale ʻia no ʻekolu papa, wahi papa.E hoʻomaikaʻi ʻia kēia kaʻina hana i nā mea maka ma mua o ka pā kila, ka hana ʻana a me ke kuʻi ʻana, a laila wili a wīwī, hoʻonui ʻia ke anu, ma hope o ka wili ʻana, kokoke ka maikaʻi kuʻi ʻana i ka paipu UOE, ma ka home ʻaʻohe kaʻina hana, ʻo ia ke kuhikuhi o kā mākou hale hana e hoʻomaikaʻi.Hoʻohana mau ʻia ʻo "West-East Gas" e ka hana hana kuʻuna, ʻo ka hoʻonui ʻia ʻana o ka lua paipu.ʻAʻole manaʻo ʻo ʻAmelika Hui Pū ʻIa, Iapana a me Kelemania, ma ka SSAW maikaʻi ʻole, he kūpono ke hoʻohana ʻana i ka pahu SSAW;Ua hoʻohana ʻo Canada a me Italia i ka SSAW, Lūkini, he wahi liʻiliʻi o ka SSAW, a ua hana i kahi kūlana koʻikoʻi koʻikoʻi, ma muli o nā kumu mōʻaukala, ʻo ka hapa nui o ka ʻōpala home e hoʻohana i ka SSAW.